Circeaster americanus

Circeaster americanus (A.H. Clark, 1916). AphialD: 178094. New record. (Fig. 2 a-d). Material examined. 1 preserved specimen with register number (included station): 178094 -B35 (B10DR15) Diagnostic characters. Five long arms (Fig. 2a). Abactinal plates: surrounded by granules and the centre of plates usually naked or sometimes with some scattered granules (Fig. 2a, b). Size of abactinal plates on arms larger than those on disk (Fig. 2a). Papulae single (Fig. 2b). Inferomarginal plates with 40–50 granules (Fig. 2c). Granules on actinal plates and bivalve or spatulate pedicellariae (Fig. 2d). Adambulacral plates: 4–7 furrow spines, 3–4 subambulacral spines and 6 oral spines (Fig. 2d). Distribution. Atlantic Ocean, south of Azores, North Carolina, Gulf of Mexico, Caribbean Sea, Guyana (A.H. Clark, 1916; Clark & Downey 1992; Mah 2022; Obis 2022). Bathymetric range. 500 m (Clark & Downey, 1992)– 2040 m (OBIS 14055 identified by Dilman). Present study: 1400 m. Remarks. There are no other similar species in GB that could be confused with C. americanus.
Published as part of García-Guillén, Laura M., Macías-Ramírez, Aurora, Ríos, Pilar & Manjón-Cabeza, M. Eugenia, 2023, Deep-Sea asteroids (Echinodermata; Asteroidea) from the Galician Bank (North Atlantic Ocean), pp. 228-238 in Zootaxa 5297 (2) on page 231, DOI: 10.11646/zootaxa.5297.2.3, http://zenodo.org/record/7993146
{"references":["Clark, A. H. (1916) A new starfish (Lydiaster americanus) from the Gulf of Mexico. Journal of the Washington Academy of Sciences, 6, 141 - 144. https: // doi. org / 10.5962 / bhl. part. 10912","Clark, A. M. & Downey, M. E. (1992) Starfishes of the Atlantic. Chapman & Hall, London, 794 pp.","Mah, C. L. (2022) World Asteroidea Database. Asteroidea de Blainville, 1830. Accessed through: World Register of Marine Species. Available from: https: // www. marinespecies. org / aphia. php? p = taxdetails & id = 123080 (accessed 12 December 2022)"]}